Topic: “ETO Adjust Factor” Off Target WaterSense Algorithm
I am currently experiencing WaterSense Algorithm problem with the RainMachine HD12. I have watering times set to adequately water during the summer’s peak. However I am now over watering as we come into fall and I expect the same next spring. I know WaterSense should be smart enough to compensate for seasonal adjustments but in our area it doesn’t do it very well. It is a pain to individually decrease each zones time every spring and fall and increase in before the peak of summer.
I base this request given my six years of experience and knowledge of the RainBird ESP-SMTe controller which is also “EPA WaterSense Certified”. The RainBird ESP-SMTe controller has a setting; “Special Features / ETO Adjust Factor” that would allow a custom setting for the seasonal watering. Settings that are “off target” from WaterSense algorithm. It would universally readjust all the zones run times with one setting, ETO Adjust Factor. This worked quite well.
I had the misconception that the RainMachine HD12 “Hot Days” setting might accomplished this. It does not. As explained by RainMachine; “The hot days algorithm has to do with a jump in temperature. So if ,normally, it would be 80 degrees that time of year and it jumped suddenly to 90 the machine knows that this larger differential change throughout the day will increase the amount of evapotranspiration occurring. The machine will then water more then it normally would to maintain the moisture levels in your soil.”
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